MongoDB

If Dbman=nil then dbman:=tdbmanage.create;Code:=tbsoncodewscope. Create (' function () {var str= ' 1111 ';d b.testc.find (). ForEach (function (x) {str=str+ x.name}); return str} ', Bson ([]));Buf:=tbsonbuffer. Create;Buf.append (' eval ',

Why should we use MongoDB?Characteristics: High performance, easy to deploy, easy to use, easy to store data. The main features are: For collection storage, easy to store data for object types. Mode of freedom. Supports dynamic

Http://www.webiyo.com/2011/02/install-mongodb-service-on-windows-7.htmlDownload MongoDBYou can download MongoDB in the different editions viz.32bit MongoDB Direct Download | 64bit Direct downloadInstallation–initial Setup Download & Extract

1, http://cn2.php.net/manual/en/class.mongogridfs.phpclassFilecontrollerextendssycontroller{/** @author YJ * @description to use the following two functions, you must first initialize * date:14-9-3*/ Public functioninit ()

The $slice operator returns the internal value of the specified array in the document//query out the 2nd to 4th book in The Jim Bookshelf Db.persons.find ({name: "Jim"},{books:{"$slice": [1,3]}})// Query out the last book Db.persons.find ({name:

Use Cases24.1 Fit Scene? Archiving and event logging? archiving and Logging? Document and Content Management systems-as a document-oriented (JSON) database, MongoDB ' s flexible schemas is a good fi T for this.Document and memory management

These days in the study of Python web development, so prepare to do a blog to practice practiced hand, of course, just practiced hand, blog has wordpress such a good thing, why still build their own cars? decided to use the Tornado framework, and

(Mongoexport Export Tool MongoDB provides a mongoexport tool that can export a collection to a file in JSON or CSV format. You can specify which data items to export, or you can export data based on a given condition. Tool Help information is as

original linkhttp://docs.mongodb.org/ecosystem/tutorial/getting-started-with-java-driver/IntroductionThe purpose of this article is to give you a simple idea of how to use MongoDB's Java-driver driver, and when you have read this article you can

Recently, when using MongoDB, I encountered a scene with multiple keywords for fuzzy query. The bamboo wind uses the Mongoengine library.Looked up all kinds of information, and finally summed up the more useful methods. First, the code, followed by

1. Download the installation packagewget http://fastdl.mongodb.org/linux/mongodb-linux-i686-1.8.2.tgzDownloadwget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.0.4.tgz   Unzip the package after download  tar zxf

Original address: Use Python to crawl all the data on the home page of the blog, and regularly continue to crawl the newly released content into MongoDBDependency Package: 1.jieba2.pymongo3.htmlparser#-*-coding:utf-8-*-"" "@author: Jiangfuqiang" ""

How do I do mongodb testing?when we use MongoDB as a database for storage in Java, what about testing? One possible direct way is to GETDB in Setup and then dropdatabase inside the teardown. This approach is relatively slow. A better way is to use

What is a replica set? Play World of Warcraft always say to hit a copy, actually these two concepts almost one meaning. The copy of the game refers to the player concentrated in the peak time to go to a scene to play strange, there will be more than

Environment:uname-v#1SMP Debian3.2. $-3+DEB7U2PHP-vphp5.4. --1~dotdeb.1(CLI) (Built:jun in the at: -: -) Copyright (c)1997- theThe PHP groupzend Engine v2.4.0, Copyright (c)1998- theZend TechnologiesTo install the MongoDB driver:1, install pecl

turn on the Profiling function To optimize for slow queries: MongoDB can monitor data through profile to optimize it.To see whether the profile function is currently open with commandsDb.getprofilinglevel () returns level with a value of 0|1|2,

(Transferred from: http://www.cnblogs.com/zhuque/archive/2013/03/29/2988639.html)Mongotop, too.a built-in tool under the Mongodb-win32-x86_64-2.2.1\bin, Mongotopprovides a way to track an instance of MongoDB to see which amount of time is spent

1. IntroductionBefore in a lot of places have seen this spring Data magical things, do not know what east, finally, today to simple to find out, the bottom is I from the online finishing ...First, explain why you should use spring to integrate

This article mainly tells you how to improve the concurrency in three IBM DB2 statements. The three methods are mainly to improve the concurrency: reduce the isolation level, the read operation will not be blocked because of lock conflicts. It will

Disk Space RequirementsHow much disk space does DB2 9 Data Server require? This is closely related to the options during installation and the file system format set by the operating system on the machine. The Installation Wizard of the DB2 9 product